We don’t know how serious this injury is at the moment, but he was clutching that right knee pretty quick.

*Update: Anderson is out indefinitely and flying back to Denver for further testing. He will be examined Wednesday morning by Avalanche medical staff. There is worry, of course, about torn knee ligaments. But tests need to confirm.

Terry Frei graduated from Wheat Ridge High School in the Denver area and has degrees in history and journalism from the University of Colorado-Boulder. He worked for the Rocky Mountain News while attending CU and joined the Post staff after graduation. He has also worked at the Oregonian in Portland, Ore., and The Sporting News. His seventh book, March 1939: Before the Madness, was issued in February 2014.

Chambers covers college and professional hockey for The Denver Post. He has written for the Post since 1994, after dumping his first 9-to-5 office job a couple years out of college. He primarily follows the University of Denver hockey team and helps cover the Avalanche.